Common Washing chemicals
Desizing commonly used additives:
Caustic soda: Milky white flaky crystal. It mainly plays the role of scouring during desizing. If the dark color needs to be redrawn, or the white embryo fabric needs to be boiled with caustic soda at high temperature before dyeing, it is also essential.
Soda ash: white powder. The effect is the same as above.
Anti-back stain paste ts-350: pale yellow liquid. Cleansing fibers and anti-back stain action.
Detergent TS-208: Cleaning cloth surface
Industrial laundry detergent: white powder.
Hydrogen peroxide: Transparent and pungent liquid. During desizing, it mainly plays a role of cooking. One of the commonly used additives is hydrogen peroxide, which is used for deep colors that require re drawing, or for white embryo fabrics that require high temperature cooking and desizing before dyeing.
Anti Back Stain agent TS-V9: Prevent the indigo dye from falling onto the monkey position, sand position, bag cloth or embroidery position during washing in this process.
Enzyme washing auxiliaries:
Enzyme powder: white powder. During dynamic operation of denim clothing in a washing machine, fermentation causes the denim warp yarn to rapidly drop and dye under physical action (denim warp yarns are all indigo colored), creating irregular white spots on the denim fabric surface. Presents a nostalgic and retro style.
Biopolishing enzyme TS-208A: yellowish brown liquid. It is usually used to remove the protruding cilia from the denim surface after desizing. It is also used for polishing and raising flowers when washing water refined cotton or some high-density denim fabrics.
Acetic acid: Transparent and pungent sour liquid. Adjust the pH value of the water in the tank before applying the enzyme water. The pH value of enzyme water for hair removal is usually 4 to 4.5.
Bleaching auxiliary:
Sodium hypochlorite: Light green transparent liquid. An indigo pigment used to bleach denim fabric.
Potassium permanganate: Purple crystal. Generally, the mixture of phosphoric acid, potassium permanganate, and water is mixed to form a liquid state. According to the required proportion of cloth surface, a potassium permanganate solution can be prepared by blending phosphoric acid, potassium permanganate, and water. Pigments (indigo, vulcanization, etc.) used to bleach the fiber attachment of denim fabric.
Hydrogen peroxide:When sodium hypochlorite is used to bleach denim fabric, it is used to unbleach it after reaching the bleaching level.
Oxalic acid: White transparent crystal. It is used for bleaching denim fabric with potassium permanganate solution after reaching the bleaching degree, and requires the addition of hydrogen peroxide of the same quality to assist in the bleaching process.
Sodium pyrosulfite: milky white powder. Used for bleaching denim fabric with potassium permanganate solution after it has reached the bleaching level. There is no need to add hydrogen peroxide to assist.
Optical brightening agent auxiliaries:
Caustic soda: Before this process is started, if the background color of denim fabric is relatively deep against the plate, caustic soda can be added while adding a whitening agent for boiling to achieve the effect of fading and adding a whitening agent to make the fabric more colorful. If the denim fabric already meets the sample requirements, there is no need to add oxygen bleaching aids such as caustic soda, soda ash, hydrogen peroxide, etc.
Soda ash: white powder. The effect is the same as above.
Hydrogen peroxide: The effect is the same as above.
Anti-back stain paste ts-350: pale yellow liquid.prevent denim indigo from falling to the monkey position, sand position, bag cloth or embroidery position during washing in this process.
Optical brightener agent VBL: Adding VBL will make the denim surface more vivid, and under the ultraviolet light, the denim surface will appear bright.
Finishing Auxiliary:
Softener: example softener paste,concentrated softener,softener flake It is mainly used for softening treatment of denim before washing water out of the tank.
Silicone oil: One is a light blue liquid, the other is a milky white liquid, and the other is a jelly-like high-concentration product. Add it before the washed finished products are out of the tank, the function is to make the cloth surface soft and smooth.
Brightener agent: Milky white liquid. Add it before the washed finished product is out of the vat, the effect is to make the cloth surface more translucent and smooth.
Fluffing Agent: mainly milky white and mixed yellow. Adding it before the washed finished product is out of the tank, the function is to make the fiber more fluffy, so that the cloth surface feels comfortable and soft. But most of them are only effective for pure cotton fabrics.
Stiffener: Added before the finished denim is out of the tank, the main function of the glass water is to make the finished denim feel stiffer after drying.
